As the third Covid-19 vaccine is ready for an emergency use authorization assessment by the U.S. Food and Drug Administration, I feel the same surprise and excitement as when the first vaccine took the same consistent steps last December.
After reporting on the new coronavirus for more than a year and talking to many prominent participants involved in all aspects of research and public health, I think it is pretty certain that most people in the scientific community do not believe that we will have access to an authorized vaccine by the end of 2020. Even optimistic people, though, take about 18 months to get to this point.
However, the country now has two licensed vaccines, one from Pfizer/BioNTech and the other from Hyundai, and a third vaccine, manufactured by Johnson and Johnson subsidiary Jensen Biotech, also appears to be on the verge of getting the green light.
According to all the reports, this is quite remarkable.
As a result of the two authorized vaccines, at least 34.7 million people in the country have received the first dose of the vaccine and more than 11.2 million have received two vaccines, All of these people are significantly less likely to get seriously ill, require hospitalization or death of the Covid 19. Si  Johnson vaccine is available, we have no reason to think it will also not be authorized, we will have an important choice, give us, in addition to more vaccines, more flexibility: this involves only one dose, transport, and distribution easier because it does not have to be stored at the other two required freezing temperatures.
Some people worry that the vaccine is not as good as Pfizer and modern vaccines, they use new mRNA technology and have been shown to have about 95% protection against the development of Covid-19 symptoms.
By contrast, the J.J. vaccine has been shown to be 66 percent effective in preventing moderate and severe diseases in phase III trials around the world. However, when it comes to serious illness, the figure jumps to 85 percent. No hospitalization or death of vaccinated persons; This was measured 28 days after injection.
